Email Inbox API + Sending by Sendmux alternatives
12 MCP servers, A2A agents and x402 APIs that also do email, ranked by how much they overlap with Email Inbox API + Sending by Sendmux (MCP server), live ones first.
Compared
| Name | Type | Live | Tools / skills | Check |
|---|---|---|---|---|
| Email Inbox API + Sending by Sendmux (this one) | MCP server | Yes | – | – |
| Context Link | MCP server | Yes | 4 | 80/100 |
| MediaPact | MCP server | Yes | – | 55/100 |
| OneSignal | MCP server | Yes | – | 55/100 |
| Cooper Email | MCP server | Yes | – | – |
| Google Maps Lead Gen MCP — Local Business Enrichment | MCP server | Yes | – | – |
| Hello Retail | MCP server | Yes | – | – |
| HubVibe: Pay-per-Call Agent Tools: Web Search, Email Verify, KYC Screening, Sto… | MCP server | Yes | – | – |
| Lead Radar | MCP server | Yes | – | – |
| Mailbox MCP | MCP server | Yes | – | – |
| primitive.dev | MCP server | Yes | – | – |
| Reach MCP — LinkedIn for AI agents | MCP server | Yes | – | – |
| Space Monkey Mailchimp Dashboard | MCP server | Yes | – | – |
Live = answered our latest free daily check. Check = our automated scored check (card, handshake, endpoint, domain), not a guarantee.
The alternatives
- Context Link Live MCP
One semantic search across your sites, Drive, Notion, email, files and Basecamp.
MCP server · ai.context-link · 4 tools · check 80/100 · also does email
- MediaPact Live MCP
Search flat-fee newsletter, podcast and sponsored content placements by budget, audience and dates.
MCP server · ai.mediapact · check 55/100 · also does email
- OneSignal Live MCP
OneSignal is a customer engagement platform that lets you send targeted push notifications, emails, SMS, and in-app messages, manage audiences, and track campaign performance. With the OneSignal MCP, manage your messagi…
MCP server · onesignal · check 55/100 · also does email
- Cooper Email Live MCP
Email inboxes for AI agents: send, receive, search, drafts with owner approval, and webhooks.
MCP server · com.cooperemail · also does email
- Google Maps Lead Gen MCP — Local Business Enrichment Live MCP
B2B lead generation tool: search Google Maps by 'plumbers in Austin', get back business profiles with emails, phone numbers, ratings, websites. The differentiator over plain Google Maps API is the contact-enrichment lay…
MCP server · nexgendata-apify · also does email
- Hello Retail Live MCP
Set up and tune ecommerce Search, Recommendations, Pages, Email, Product Agents and Analytics.
MCP server · com.helloretail · also does email
- HubVibe: Pay-per-Call Agent Tools: Web Search, Email Verify, KYC Screening, Sto… Live MCP
70+ pay-per-call tools for AI agents: web search, email verify, KYC, stocks, crypto, news, data
MCP server · io.github.Its-fortunatefolly · also does email
- Lead Radar Live MCP
B2B lead generation from Google Maps: search, dedupe and email-enrich businesses. Needs API key.
MCP server · fr.lead-radar · also does email
- Mailbox MCP Live MCP
Read, send, file and search email in any Gmail, Microsoft 365 or IMAP mailbox, plus its calendar.
MCP server · com.mailbox-mcp · also does email
- primitive.dev Live MCP
Email infrastructure for AI agents — send, receive, search, and manage email over a clean HTTP API. Connect verified domains, route inbound mail, set up webhooks, and automate email workflows. Authenticate with a Primit…
MCP server · primitivedotdev · also does email
- Reach MCP — LinkedIn for AI agents Live MCP
LinkedIn for AI agents: inbox, invitations, Sales Navigator search, posts, jobs, quotas, webhooks.
MCP server · com.reachmcp · also does email
- Space Monkey Mailchimp Dashboard Live MCP
Mailchimp engagement intelligence for AI agents: campaign analytics and audience insights.
MCP server · com.igods · also does email